Posted by gouessej on Sep 01, 2022; 7:44pm
URL: https://forum.jogamp.org/shadows-are-lost-while-Java3D-1-5-2-to-1-7-0-migration-tp4041834p4041838.html

According to the documentation:
"Color components should be in the range of [0.0, 1.0]"
https://jogamp.org/deployment/java3d/1.7.0-final/javadoc/org/jogamp/vecmath/Color3f.html